2009年9月10日星期四

Biomedical MEMS Public Lecture

A public lecture “Biomedical MEMS” was organized by City University of Hong Kong today on 10 Sep 2009. The invited speaker was Prof. Richard Syms (Head of the Optical and Semiconductor Devices Group in the EEE Dept. Imperial College London).

Microelectromechanical system (MEMS) is a method of constructing integrated sensors and actuators using layer deposition, surface patterning and etching to form 3D structures in semiconductors, metals and plastics.

Prof. Syms introduced the application of MEMS devices for small diagnostic systems in chemistry, biochemistry and medicine.

He shared some biomedical cases such as Caliper (Lab on a chip components & systems), Cardio MEMS (In-vivo monitoring system). Then he mentioned the Mass Spectrometer employs MEMS Quadrupole (The device is formed from two bonded silicon-on-insulator (BSOI) substrates, which are attached together to form a monolithic block.) Then he briefed Nanoelectrospray can be used in LC-MS and CE-MS, and MEMS is used in Nanospray source.

Mass Spectrometer chip on PCB

MEMS devices for cell control for In-vivo experimentation, and MEMS cell stressing device were mentioned.

Moreover, the technique can be applied in the sensors for internal in-vivo Magnetic Resonance Imaging so that the resolution could be improved (19F Magnetic Resonance Spectroscopy) for identifying the Cholangiocarcinoma (It is a cancer of the bile ducts which drain bile from the liver into the small intestine.). Another application is in RF tissue fusion (cutting by using RF).

Finally, he concluded that many applications of MEMS could be found in biomedical engineering, microanalytical instrument and system for in-vitro experiment, etc.

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作者筆名劍如虹，畢業於香港城市大學及香港理工大學，學術範圍包括應用科學，應用物理，電腦，化學及環境工程等，以業餘時間攻讀完工程管理博士學位。由於喜歡武俠故事式電腦遊戲，才引發奇想，把品質管理理論用武俠小說方式表達。作者現任職品質經理，曾多次於專業學會主辦的國際會議和學術期刊發表論文及研究報告。
Dr. Lotto Lai has 20 year hands-on experience in scientific research, quality assurance and management in Commercial Laboratory, University Testing Centre, Certification Body and Consultants Firm.
He is Former Chairman & Fellow in HKSQ, MHKIE, FASQ, CMQOE and IRCA QMS Lead Auditor, as well as, Asso. Academician in IAQ.